A tlvr inductor applied to a gpu board

Abstract

A TLVR inductor for GPU board circuitry, relating to the field of inductor technology, employs a technical solution comprising a magnetic core and windings. The magnetic core is a symmetrical, H-shaped core about its central axis, and includes two windows positioned on either side of the central axis. The core is made of metal magnetic powder, and its outer surface is covered with an insulating layer. Two pairs of windings are wound around the core, each passing through one of the two windows, and are symmetrical about the central axis. Each pair of windings includes a primary winding and a secondary winding, both of which are covered with an insulating layer. This invention uses the H-shaped core and two pairs of windings to form two symmetrically arranged TLVR inductors that are mutually coupled. The insulating layer covering the core and winding surfaces allows it to withstand higher input voltages and improve power. Using a metal magnetic powder core as the core material results in low losses at high power. The entire inductor maintains its size while effectively increasing power.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, in particular to a TLVR inductor applied to GPU board lines. Background Art

[0002] There is a kind of Transient Inductive Voltage Regulator (TLVR) inductor applied in the artificial intelligence (AI) computing power card, which is used as the input filter inductor at the front end of the graphics processing unit (GPU) chip core. The stability of the input current voltage directly affects the working efficiency of the chip core, and it has a large power demand and a high working voltage. Traditional TLVR inductors usually use manganese-zinc ferrite to make the magnetic core, which has excellent performance in the low-load state. However, as the load increases, the power loss increases rapidly; the high working voltage will also exceed the surface resistance of the traditional TLVR inductor, posing a risk of conduction short circuit. The above factors lead to the traditional TLVR inductor not meeting the needs of AI computing power cards. Content of the Utility Model

[0003] Aiming at the problems in the prior art solutions that the power loss of the traditional TLVR inductor increases rapidly under high load conditions and there is a risk of short circuit under high working voltage, the utility model provides a TLVR inductor applied to GPU board lines.

[0004] The utility model provides the following technical solution: A TLVR inductor applied to GPU board lines, comprising:

[0005] A magnetic core, the magnetic core is an E-shaped magnetic core symmetrical about the magnetic core central axis, the magnetic core includes two windows, and the two windows are respectively arranged on both sides of the magnetic core central axis; the magnetic core is a metal powder core, and the outer surface of the magnetic core is covered with an insulating layer;

[0006] Windings, two pairs of windings are wound around the magnetic core, the two pairs of windings respectively pass through the two windows, and the two pairs of windings are symmetrical about the magnetic core central axis; each pair of windings includes a primary winding and a secondary winding, and the surfaces of the primary winding and the secondary winding are both covered with an insulating layer.

[0007] Preferably, the magnetic core includes an I-shaped magnetic core and two U-shaped magnetic cores symmetrically arranged about the central axis of the I-shaped magnetic core. The two U-shaped magnetic cores are both bonded to the I-shaped magnetic core to form a closed magnetic circuit and respectively enclose the two windows.

[0008] [[ID=二十七]]

[0008] Preferably, the intersection of any two intersecting outer walls on the surface of the magnetic core is an edge.

[0009] Preferably, both the primary winding and the secondary winding are single-turn copper sheets.

[0010] Preferably, the insulating layer is an insulating coating.

[0011] The beneficial effects of the present utility model are as follows: Two TLVR inductors with a symmetrical arrangement are formed by using a rectangular magnetic core and two pairs of windings. They are coupled to each other, and the two inductors share the bottom plate, reducing the board occupation space. An insulating layer is covered on the surface of the magnetic core and the windings, enabling it to withstand a higher input voltage and improve the power. Using a metal powder core as the magnetic core material, it has better performance at high power and low losses. The entire inductor can achieve an effective increase in power while maintaining the same volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. is a three-dimensional schematic diagram of an embodiment of a TLVR inductor.

[0013] Figure 2 FIG. is a sectional view of an embodiment of a TLVR inductor.

[0014] REFERENCE SIGNS: 10 - winding, 11 - primary winding, 12 - secondary winding, 20 - magnetic core, 21 - I-shaped magnetic core, 22 - U-shaped magnetic core, 23 - window. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes the embodiments of the present utility model in more detail with reference to the drawings and reference signs, enabling those skilled in the art to implement it after studying this specification. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0016] The present utility model provides a TLVR inductor applied to a GPU board line, including a first inductor and a second inductor symmetrically arranged about the central axis of the magnetic core 20. Both the first inductor and the second inductor are TLVR inductors, forming a mirror image structure and being coupled to each other. The magnetic cores of the first and second inductors are bonded to form a rectangular magnetic core 20, and two pairs of windings 10 are wound around the magnetic core 20 to form the first and second inductors respectively.

[0017] Specifically, as shown in FIGS. Figure 1 , 2 , the magnetic core 20 includes an I-shaped magnetic core 21 and two U-shaped magnetic cores 22. The two U-shaped magnetic cores 22 are respectively bonded to both sides of the I-shaped magnetic core 21 to form a rectangular structure, having two closed magnetic circuits, which are respectively used as the magnetic cores of the first and second inductors. The two U-shaped magnetic cores share the I-shaped magnetic core as the bottom plate, which can reduce the board occupation space. The two U-shaped magnetic cores 22 are symmetrically arranged about the central axis of the I-shaped magnetic core 21, and the two windows 23 respectively formed by the two U-shaped magnetic cores 22 and the I-shaped magnetic core 21 are respectively located on both sides of the I-shaped magnetic core 21. The central axis of the I-shaped magnetic core 21 is also the central axis of the entire magnetic core 20, and the magnetic core 20 is symmetric about its central axis. In other embodiments, other specific combination forms that can form a rectangular structure and are symmetric can also be adopted.

[0018] Furthermore, the magnetic core 20 is made of metal magnetic powder, which has advantages over the manganese-zinc ferrite used in traditional solutions under high load conditions. The magnetic core 20 also eliminates the chamfered feature on the outer surface of traditional TLVR inductor cores, with any two intersecting outer walls forming an edge, thus reducing the difficulty of pressing and shaping the metal magnetic powder core during manufacturing.

[0019] Both pairs of windings 10 are wound on the magnetic core 20. Specifically, the two pairs of windings 10 pass through two windows 23 respectively, and the two pairs of windings 10 are symmetrically arranged about the central axis of the magnetic core 20. Each pair of windings 10 includes a primary winding 11 and a secondary winding 12, both of which are single-turn copper sheets and pass through the same window 23.

[0020] The outer surfaces of the magnetic core 20, primary winding 11, and secondary winding 12 are all covered with an insulating layer. Preferably, an insulating coating can be sprayed to form an insulating coating, which enhances the insulation capability of the inductor and can withstand higher input voltages compared with traditional technologies.

[0021] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A TLVR inductor for use in GPU board circuitry, characterized in that, Comprising: A magnetic core, the magnetic core being a figure-eight magnetic core symmetric about the central axis of the magnetic core, the magnetic core including two windows, and the two windows being respectively arranged on both sides of the central axis of the magnetic core; the magnetic core is a metal magnetic powder core, and an insulating layer is covered on the outer surface of the magnetic core; Windings, two pairs of windings are wound around the magnetic core, the two pairs of windings respectively pass through the two windows, and the two pairs of windings are symmetric about the central axis of the magnetic core; each pair of windings includes a primary winding and a secondary winding, and insulating layers are covered on the surfaces of the primary winding and the secondary winding.

2. The TLVR inductor for use in GPU board lines according to claim 1, characterized in that, The magnetic core includes an I-shaped magnetic core and two U-shaped magnetic cores symmetrically arranged about the central axis of the I-shaped magnetic core, and the two U-shaped magnetic cores are both bonded to the I-shaped magnetic core to form a closed magnetic circuit and respectively enclose the two windows.

3. The TLVR inductor for use in GPU board lines according to claim 1, characterized in that, The intersection of any two intersecting outer walls on the surface of the magnetic core is an edge.

4. The TLVR inductor for use in GPU board lines according to claim 1, characterized in that, The primary winding and the secondary winding are both single-turn copper sheets.

5. A TLVR inductor for use in GPU board wiring according to claim 1, characterized in that, The insulating layer is an insulating coating.

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